3In very large (5-quart) glass bowl, place about half of the salad greens. Layer with chicken, tomatoes and cucumber. Reserve 1/4 cup onion for topping; layer remaining onion over the cucumber. Top with remaining greens.

3In very large (5-quart) glass bowl, place about half of the salad greens. Layer with chicken, tomatoes and cucumber. Reserve 1/4 cup onion for topping; layer remaining onion over the cucumber. Top with remaining greens.